Contract call simulation (eth_call) on 16 EVM chains
Contract call simulation (eth_call) on 16 EVM chains: raw result, uint, address and string readings, any block, and a decoded revert reason on failure.
Answeringour last check, 2026-10-21
1 of 1checks answered this week
276 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/chain/call
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.01 | 276 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"chain": "ethereum",
"data": "0x95d89b41",
"to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"chain": {
"description": "chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id",
"type": "string"
},
"data": {
"description": "calldata as 0x hex (4-byte selector plus encoded arguments)",
"type": "string"
},
"to": {
"description": "the contract address",
"type": "string"
}
},
"required": [
"chain",
"to",
"data"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"as_address": {
"description": "result read as an address when it fits",
"type": [
"string",
"null"
]
},
"as_string": {
"description": "result read as an ABI-encoded string when it looks like one",
"type": [
"string",
"null"
]
},
"as_uint": {
"description": "result read as an unsigned integer when it is one 32-byte word",
"type": [
"string",
"null"
]
},
"block": {
"description": "block the call was run at",
"type": "string"
},
"chain": {
"description": "the chain name that was queried",
"type": "string"
},
"chain_id": {
"description": "EIP-155 chain id of that network",
"type": "number"
},
"from": {
"description": "caller address used, if given",
"type": [
"string",
"null"
]
},
"note": {
"description": "plain-language reading of the result",
"type": "string"
},
"result": {
"description": "returned bytes as hex",
"type": [
"string",
"null"
]
},
"result_bytes": {
"description": "length of the result in bytes",
"type": "number"
},
"result_truncated": {
"description": "true when the result was cut at 8,192 bytes",
"type": "boolean"
},
"revert_reason": {
"description": "error text from the node or decoded Error(string) or Panic",
"type": "string"
},
"reverted": {
"description": "true when the call failed",
"type": "boolean"
},
"source": {
"description": "where the data was read from",
"type": "string"
},
"to": {
"description": "the contract that was called",
"type": "string"
}
},
"required": [
"chain",
"chain_id",
"to",
"block",
"reverted",
"note",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}